Water-meter.



WATER METER. APPLoATIoN FILED APB.5,1906.

5 SHEETS-SHEET 1.'

@unaniem 5 SHEETS-SHEET 2A PATENTED AUG. 6, 1907.

W; s. PoLLRnf WATER METER. APELIOATIGN FILLED APE.5.1906.

Y Y ff N PATENTBD AUG. 6, 1907.

W. S. PLLARD.. WATER METER. AMLIUATION FILED APB.5,1906.

SSHEETS-SEET 3.

PATENTED AUG. 6, i907. W, S. POLLARD. WATER METER.

APPLIGATION FILED APB. 5,1906.

J5 SEBETS-SHEET 4.

imi?

ativan LPATENTED AUG. 6, 1907.A

W. s. POLLARD.

WATER MEHR. APPLIGATIONEILED APRS. 1906.

5 SHEETS-SHEET 5.

swi Masses WATER-METER.

Specification of Letters Patent.

Patented Aug. 6, 1907.

Application filed April 5, 1908. Serial No. 310,081. I

llo all whom it may concern:

Be it known that l, WAI/run S. Pommes, a citizen oi the United Statesy residing in the city and county o Philadelphia, State ol' `Pennsylvania, have invented a new and useful Water-l\leter7 ol which tho following is a specilication.

My present invention relates to a fluid meter and consists of a novel and simplified construction o a meter in which balanced pistons are employed and in connection with'l which novel means are employed for sealing the component parts in order that any improper manipulation oi the registering mechanism may be positively prevented My invention further consists of a novel construction of a registerii'ig piston and novel means cri-acting therewith, whereby the iow el; water through the meter will he measured in an accurate and reliable manner. v v

It lurthf r consists of a novel 'construction oi a transmission device actuated by the registering piston and adapted to drivi` the registering mechanism.

It -iurtl\.,r"consis'ts of a novel construction oi registering piston which is conl witted With the transmission mechanism in such a manner that the piston may freely rotate within its respective chamber.

lt further consistsoi novel means for mounting the transmi. ion means coacting with the registering piston within said piston.

It further consists of a novel construction oi hollow pistons having a removable closure in order that the weight oi the pistons may be varied by inserting therein any suitable material so that the pistons may he accurately balanced in the fluid which is passing therethrough.

.lt urthe'r consists of a novel construction by means of which the' weight of the gear wheels and their adjuncts is removed from the valve stem which is adapted to actuate the registering mechanism. Y

it further consists oi a novel construction of a casing having a plurality oi piston chambers therein and a novel construction and arrangement of ports and passages, 'whereby the lluid passing through the meter actuates the different pistons at a desired time -and the fluid is discharged irom 'the chambers formed between the ends of the pistons and the contiguous sides of the piston chambers in such a manner that the meter will accurately register the amount oi liuid passing therethrough.

lt further consists oa novel construction of cam member adapted to be reciproca-ted hy' the registering piston .in unison therewith and means co-acting with said cam member whereby the registering mechanism will be accurately driven and the turning of said registering mechanism in a reverse direction positively prevented.

Ttniurther consists of a novel means or'linounting the cam member forming a part of the transmission mechanism within the registering piston.

It further consists oi a novel construction of astuling box intermediate the registering mechanism nd the piston chamber which positively prevents any of the fluid being measured from passing to the registering mechanism.

1t further consists oi other novel features ol construction, all as will he hereinafter fully set forth.

Figure l represents a sectional View of a fluid meter embodying my invention. Fig. 2 represents a. sectional view sim'ilar to Fig. l but showingthe opposite side oi the device. Fig. 3 represents a sectional plan view of the meter on line 3--3 Fig. l. sents a sectional view ol the meter casing having certain parts thereol` removed for clearness o illustration. Fig. 5 represents a sectional view on line :it-a: Fig. 4. Fig. G represents a. scctionai View of one of the pistons ei'nployed to Fig. 4 but looking in the oppositendirection. Fig. 8 represents a sectional view oi one of the piston chaml bers on l-ine y-y Fig. 8. Fig. 9 represents a plan view oi the device partly broken away for clearness of illustration. closure for the registering piston. Fig. 11 repri-sent's a plan View of the closure oi the other piston employed. flFig. 12 represents a side elevation oi the. transmission means coacting with the registering piston and the registering mechanism. Fig. i3 represents a side ele- 85 vation similar to Fig. 12 but showing the parts in a different, relation to ea'ch other. Fig.-14 represents a sectional plan view of a disk carried by the registering piston and certain of its adjuncts. Fig. l5 represents a section on line` z-z Fig. 14. Fig. l'i repre- 90 sents a diagrammatical sectional view "showing the manner in which the passages leading from the ports in one piston chamber communicate with the porta. in the other piston chamber.

Similar' numerals ofreerence indicate correspond- 95 ingl parts in the figures.

Referring to the drawings. l designates a casing having at its upper end an outwardly extending flange 2 adapting the same to receive a suitable cover or closure 3, the improper movement of which is prevented bycmeans of a pin or equivalent device 4, which engages saicl'casing and said cover. I A

5 designates a' holt or screw passing through the cover 3 and having threaded engagement with the flange 2.

l6 designates a bolt or cap-screw, the o uter end ,of 105 which has threaded enea-gement with the rlange l2. The cover 3 has a semicircular recess 7 therein', in order that'the head of the bolt 6 will come in close proximity thereto` 8 designates an aperture through the head of the holt 1`10 6, and 9 designates .an aperture through the cover 3, there being a suitable sealing device 10 passing through Fig. 4 repre- 70 Fig. 7 represents a sectional view similar 75 Fig. 'l0 represents a plan view o the 80 said apertures, whereby the removal of the cover 3 from the casing 1 is positively prevented without iirst breaking the sealing device l0.

ll designates an upwardly projecting portion of the casing, in order that when the bushings l2 and 13 are inserted, there will be no liability of the iluid employed leaking beneath the bushings.

14 d esignates a portion of the casing at the upper end which prevents leakage around the bushings in the same manner as already described in connection with the upwardly extending projection l1.

l5 designates a (lange carried by the cover 3 against which the upper eiid of the bushings '12 and 13 abut, when the parts varel in assembled position, as seen in Fier. l and 2, it being noted that the upper ends ol the bushings closely engage the cover 3 and form a Water tight joint therewith. lt will be seen, that by the employment of the two bushings 12 and 13, two piston chambers lil and 17 are formed.

i8 designates a piston, which in the present instance, l have shown as being hollow, in order that the weight; oi the piston will be substantially the same as the weight of the lluid which is being measured, or in other words, the piston will be equally balanced in the fluid. The piston is provided with a suitable closure or plug 1,9 by means of which the piston is rendered fluid tight and at the same time the weight of the piston may be vvaried by inserting any desired material therein, in order to accommodate the same to the fluidswhich are being measured. This piston 18 has a sliding fit in the bushing l2 and when in its extreme position it abuts against the cover 3 and the [lange l5 carried thereby, it being noted that the lower end of the casing l is suitably recessed :is at 20, to forni a fluid chamber when the piston is at the extreme end of its stroke into which (luid may be conducted to move the piston in the opposite'direction.

2l 22 and 23 designate annular grooves in the piston '18 thereby forming iluid chambers bidtween the bushing l2 and said piston.

.fl designati-s :t registering piston which is substanlinlly hollow and provided ywith a plug or closure 25, which lnis threhded or other suitable engagement there with. ,i y

2li designates a sleeve or casing closed at one end and having threndwl engagement with the plugr or closure 25, thil bottoni ol said sleeve or easing liaving a sninibh` apertnnl therethrough through which passes thtI rod Z7 provided at its lower end with it nut or Shoulder 12b. i,

2?) designates a guidedisk or block having an apen turil il() (ln-rethro'ugh, through which the rod 27 passes.

3l designates n. tube or sleeve mounted on the rod 27 interiin-dinl-il the disk 39 :ind the bottoni of the casing 21S. Zll design-.iles :1. tubiI or slr-eve also mounted on the rod 27 and engngingillnother sidiI ol' the disk 2), the sleeves Ill und It. :undiludisk 2l) beingr nntintained in siiilubhji-lation willi respect to ein'h other by means of n. nnt il?, boring threadid engagement with the rod :ind :t plinior block vi-l interposed between s-.id nnt :ind ilu; und olV Ilnl sloom CL.

2li designati-s n. guide rod having lhrezulod or other engagement with Ilnvoler I :ind passing through lhe plate or bloei; Iil and also llnonnb :in aperture Citi in the dish or ldoi l: Z'J.

strates 37 designates an aperture in the block 29 in which is secured in any suitable manner the member 38 having outwardly extending arms or sleeves 35) and 40, said member 38 being suitably apertured in order that it may move freely on the rod 41 on which it is mounted, said rod being journaled at its upper end in a bracket 42 carried in any suitable manner by the cover 3 and also in the cover 3 of the casing if desired, said rod being provided at its upper end with a suitable pinion` 43 coacting with the registering mechanism to which l will hereinafter refer. i

44 designates a pin or member carried bythe rod 41 and extending outwardly therefrom on opposite sides and 45 designates a pin or member carried by the rod 4l near its lower end, it being noted that ,said pin 45, in the present instance, is located with respect to the rod41 at substantially right angles with the pin 44, al

Y though it will be apparent that the angle which one memberl'orms with respect to the other may be varied according to the conditions and requirements of the case and in the present instance l have shown only two of these pins being employed.

Referring now especially to Figs. 12 and 13, 46 designates a cam lace on the lower portion 4G of the' member 38. 47 designates @.cain [ace carried on the same, ide of the or tending portion 39 of the member 38, it'being understood that thesides of the extending portions 39 and 40 of the member 38 opposite the cam faces 46 and 47 are substantially straight but said members are slightly beveled in order that the center sleeve-like port-ion oi the member 38 may abut against the pins or n rods 44 and 45, as clearly indicated in Figs. 12 and 13. 48 designates a fluid inlet which is threaded or otherwise adapted to be suitably connected with a source of Huid supply, there being an inlet passage-49 extending partly around the easing, said passage having leading therefrom the inlet passages 50 and 5l, as seen most clearly in Fig. 3. 52 designates the discharge mouth or end of the casing l which is threaded or otherwise adapted to be connected with a suitable pipe or conductor, said discharge end 52 communicating with a passage 53 extending partly around the-casing whichv communicates with discharge passages 54 and 55. They registering piston 24 has substantially the saine external dimensions as the pistori 18 and is provided in a similar manner with annular grooves 56, 57 and 58.

1n. order to more clearly describe the manner in which the water circulates in the different chambers to actuate the registering mechanism, l will now describe the manner in which the water passes from one piston to the other and from the inlet to the outlet. Having the parts as seen in Figs. l and 2, it will be understood that thel registering piston is moving upwardly, the fluid above the piston passes through the port 59 through passage ($0, port (i1, annular groove or chamber 22 in the piston .18, through port 52 into passage 54 and thence through passage. 53 tothe discharge outlet 52. The registering piston 24 which has now reached the upper part of the chamber l7, remains stationary' in the upper part ot' said cylinder until the piston i8 is moved to the lower part oi' the chamber 16 in which it is located, it being understood that at this time both the pistons are seated :it the upper end ol` their respective chambers. .-ls the registering piston 24 moves upwardly to its erin-nie 'upper position7 the motive. tluid lso 'passes through the inlet 4 8 to the passage 49 to passage 50 and through port 63 into the' pistou' chamber 17 around the annular groove or chamber 56, through port 64, th'rough pass-.lge65 which is defiected at its upper end and communicates by mea-ns of port .66 with the interior of the piston chamber 16, in which is located the piston 18' and acting ou the end of' this piston moves said piston downwardly to its extreme downward position. As this piston 18 moves downwardly the fluid beneath the piston willdischarge through port 67 and into passage 68, which leads to the port 69 opening into the registering piston' chamber 17,'it being understood that the registering piston is now seated in its uppermost position. The annular' groove 57 will register with the port 69 and the fluid will pass therethrough 'around .fthe annular groove or chamber 57, through port 70 into 'the passage 55 and thence through passage 53 to the -iiid to move the registering piston down, it being undel-stood that-the pistim 18 is now seated in the bottom of its chamberv and the registering piston 24 is now seated in Athe top oi its respective chamber.' The water ehteringthc inlet 48 passes through passage 49 to passage' 51 aridthence through port 71 into chamber 16 'and around thi` annular groove 23 which at this time registers with said'port 71, thence through port 72 into paSSge (i0, thence through port 59 into the chamber 17 and in rear of the registering piston and forces said pis- -`ton downwardly'to its lowermost position.- As the regpassage'i` and thence through passage 58 to the outlet 52. Both theregistering and the other piston are now seated in their lowermost positions andthe next operation is for the piston 18 to mo.ve towards the top of its respective chamber. The motiveluid -`'passes .through inlet 48, passage 49 to passage 50 and thence through port 77 into the chamber 17 in 4'which the' registering piston is located and since the annular groove 58 now registers with this port the rhiid will pass l rom port 77 around annular chamber 58 in the piston thence through port 78 into passage 68 which communicates, by means oi port 67, with the bottom of i the piston chamber 16 and passing underneath the piston 18 causes said piston to be moved to its uppermost position. As the pistou 18 moves upwardly the motive fluid above the piston will pass through port 66, passage (i5 and through port 79 opening into the registering piston and chamber 17 and since the annular groove 57 at this time registers with port 79 the fluid will pass around the groove 57, through port 80 into passage 55 and ihence` through passage 53 to the main outlet 52. The piston 1.8 is now iuits uppermost position and the registering piston is to be moved to its uppermost position which is caused in the following manners-#The fluid entering the inlet 48 passes through passage 49 lan d passage 51 through port 8l and sincethe annular groove 2l at this time' registers with said port the fluid will pass around the annular groove 2l through port82, passage 74, port 73 beneath the registering piston 24 and cause the same to move upwardly to its uppermost position in this piston chamber.

`able manner on the sleeve 99.

tering piston moves upwardly the disk 29 en which is' rotatably mounted the rod 27 will travel upwardly with the piston. The cam face 47 will engage the pin 44 and as it moves upwardly the rod 41 on which the pin 44 is mounted will be rotated-one quarter turn. As the registering piston moves downwardly the cam face 46 engages the lower pin 45 and owing to the curvature o the operative cam surface the rod 41 will be rotated another one-quarter tuin so that one complete reciprocation of the piston causes therod 41 to berotated a half turn. The pins 4 4 ahd 45 are so located that the sliding cam member 38 will always contact with either the upper or lower pin or both so that there is no possibility of'any improper rotation of the rod 4l taking'place and furthermore owing to the construction of the cam faces it will be impossible for the sliding cam member 38 to cause the rod 41 to vrotate in the wrong direction, so that if the inlet and outlet were reversed and the water passed through the meter in the opposite direction the water would be accurately measured, it

being immaterial if the inlet and outlet are inter-v said gear wheel being mounted on a rod or pin through which passes the pin 86, the gear wheel 84 being suitably slotted on its face, in order that the axle or rod 85 on which it is mounted will be fixed in relation thereto, it being noted in Figs. 1 and 2 that in the present instance the lower end ,of the axis 85 is suitably mounted and has a bearing in the upper end ol the closure 83. The casing 3 is aperturcd at 87 anda closure 88 has threaded er other engagement with said aper ture.

89 designates an opening through the .closure 88.

90 designates avalve member having in the present instance a beveled seat 91 which is adapted'to coact with a corresponding seat in the stufng box 92. The stuffing box 92 has a chamber 93 therein.

94 designates a valve rodor stem passing through the valve 91 and through the stuffing box 92, said rod or stem 94 carrying at itslower end arod or pin 95 which is adapted tb engage a slot 96 in the axis 85 ot the gear wheel 84, whereby said rod 94 is rotated in unison w ith the gear wheel 84. The weight ofthe gear Wheel 84 and its adjuncts is thereby removed` from the valve stem 94, as will be evident. l l' n I 97 designates a piston head.having an annular groove 98 therein, said head having extending therefrom a sleeve 499 which passes through a closure or cap 100 which has threaded or other engagement with the top ofthe stuffing box 92..

101 designates a set screw or equivalent device which passes through the sleeve 99 and engages the valve stem 94, whereby the valve stem 94 is fixed relative to the piston 97.

102 designates a pinion or gear mounted in any suit- In the present instance the chamber formed between the pistonand the bottom of the stuffing box in the chamber 93 is filled with any suitable lubricating material, preferably a :substance such as a thick or heavy grease. It will be seen that the stuffing box and its adjuncts are located in a chambered casing 103 provided with a suitable flange 1.04 on which is adapted to be seated a cup or cover 105`which is secured with respect to said flange by means ol screws or equivalent devices 106 and a sealing device 107 which is similar to that, already described in connection with the cover Il and since this icature has been described before I have deemed it unnecessary to further describe the same.

108 designates pins which engage the casing 103 and the body 105, whereby said body .105 cannot be removed Withoutl lirst raising the same above said pins, it being understood that one ond'of said pins would be ixed either in the flange 104 or in the cap 105. The top of the cap 105 would consist of suitable transparent material such as glass, in order that the registering mechanism (not shown) located in the chamber 109 may be plainly seen, it being understood that any suitable or conventional type of registeringmechanism would be employed and this would be connected with and actuated by the pinion 102. A'

110 designates an idler which in the present instance I have employed intermediate the pinion 43 and the gear Wheel 84, although it will be understood that in some instances this idler may be dispensed with according tothe conditions and requirements of the case and the result which it is desired to attain.

111 designates an aperturd plate secured in any suitable manner-.to the casing 3 above the chamber 17 and in the present instance 1 have shown this plate as being held in place by a suitable ring 112. The purpose o this plate is to positively prevent any sticks or foreign material from passing into contact with the gear wheels or the registering mechanism.

' 1t will thus be apparent that there is a continuous flow o fluid throughlthe meter and that owing to the novel construction of transmission de vice the registren ing mechanism Will always be driven in the same direction, it being immaterial whether the fluid passes from the inlet to the outlet or vice versa. Owing to the-novel manner o' mounting the valve stem which coacts with the registering mechanism all of the weight oi the gears is removed from this valve stem and the relative longitudinal movement of said stem with respect to the main gear Wheel is permitted.

The passage of the fluid to the registering mechanism is positively .prevented by means of the valve 90 mounted on the valve stem 94 and the thick grease or other fluid located in the chamber oi the stuffing box.l

The diielent pistons may be readily varied by removing the closure therefor and placing within a material of any desired weight in order that the piston will be balanced as desired in the fluid which is being measured.

The different pistons are positively moved andthe iiuid from the opposite' ends of the pistons has a iree exhaust to the discharge outlet. Owing to the employy. meut oi the bushings 12 and .13 Within which the pistons reciprocate the necessity oi throwing away the casing when the piston cylinders become worn is obviated, since it is only essential to insert in said casing a new bushing or bushings.

It will be seen that if one fastening member of the cover 3 or the member 105 is loosened or removed, said cap 3 and memberlO cannot be rotated without iirst raising said member and said cover a ove the pins 15b and 4, thus positively preventing any improper manip ulation oi the registering mechanism or its adjuncts.

1t will be apparent from the foregoing that l have produced a novel and simplified construction of iuid meter which embodies the advantages enumerated in the statement o invention and the description and, while in the present instance I have shown the p1'e. erred embodiment thereof, it is to be understood that it is susceptible oi modification in various particulars Without departing from the spirit and scope of the invention or sacrificing any ol its advantages.. it will be further apparent that there is no pounding or hammeringo the pistons and there is always a constant ow of water through the meter and moreover s full stroke of the pistons is always obtained. Owing to the manner in which the pistons are equally balanced the wear of said pistons in their cylinders is reducedto s.' minimum with a consequent reduction of uid lealed 1t is further to be noted that in the present instan;v i have shown each of the piston cylinders as being ref cessed or chambered at their lower end and that an abutment for the pistons at each end of theirstrolre isv also provided in order that the fluid being measured may always act against the ends oi the pistons in an eliicient and reliable manner.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, isz- 1. 1n a meter, plston cylinders having ihild. ports and passages communlcntlng therewith, a piston in each ot said cylinders, a cam member carried Within oneol! said pistons, and a rotatable member actnated'thereby and adapted to actunte s. registering mechanism.

2, In a meter, plston cylinders having mild por-ts and' passages communlcutlng therewith, a piston in each of said cylinders. each ofsald pistons havlnge plurality of annular grooves thereon adapted to register with said ports, a cum member carried within one ot said pistons, a member roland by ssld. cani member, and means driven by snld rotar ble member adapted to'actuate a registering mechunlsm.

3. ln u meter, piston cylinders having ports aul passages communicating therewith, n piston in each of said cylinders, each of said pistons having n plurality of annular grooves thereon adopted to control snld ports, a cam member non-rotatably carried within one of said pistons,

a shaft rotated thereby and adapted to drive u ,registering mechanism, and means for permitting the rotation of the cn`m carrying piston.

4. In n meter, n casing having piston cylinders therein, ports und passages communicating .willi said cylinders, snld'cnsing having n removable cover, means for sealing suld casing with respect to said cover., a piston in each of sold cylinders, euch of salil pistons having a plurality of annular grooves thereon, a cam member carried williin one of sold pistons, 4a shaft, means curr-led by said shaft coactlng with Suid cam member to uctunte said shaft, and means driven by said shaft for actuating a registeringT mechanism.

5. In n meter, a casing having u removable cover, piston cylinders therein, the latter' having ports and passages4 communicating therewith, means for sealing sald casing. a hollow pistou in each of said cylinders having a removable top and u plurality of annular grooves at the outer periphery or' said pistons, a cam member carried by one of. said pistons, means for permitting tbe rotation of the cam carrying piston menus for preventing the rotation of said cam member. n shnft, means carried by said shaft coacting with said cum to uctunte said shaft, and means conctng with said shaft to actunte a registering mechanism.

ll. ln a meter, n plurality of piston cylinders, a piston having :i plurallty of annular' grooves ln each of snlrl cylinders. a sleeve removably secured within .one of said pistnn's, a cam member mounted within sald'sleevenmeans for prethe 'ports therein, a sleeve within one of said pistons, a

-cam meinbe 'non-rotatably mounted within said sleeve, u shaft, means 'car d .thcreby coacting with said'cam member which or 1` the'reciproeatlon of the cam carrying piston actuates said shftfand means co-acting with said shaft for driving a registering mechanism.

8. In a nieterfa4 plurality of piston cylinders having ports and passages therebetween, a piston having a plurality of annular grooves in each cylinder and controlling the ports therein, a 'cam member mounted within one of `said pistons, a'Shaft, means carried by said shaft coacting with said com member to actuate said shaft' the latter being adapted to drive a registering mechanism, and means for preventing injurious material passing from one end of one of the piston cylinders.

9. In o. meter, a plurality of piston cylinders having ports and passages therebetween, a piston having a plurality of annular grooves in each piston cylinder and controlling the ports therein, means for permitting the insertion of material within said pistons to vary the weight 'lxereof, a cam member non-rotatably iixed within one of said pistons intermediate the ends thereof, a shat passingr through said cam member, means on said shaft coacting with s aid member to rotate said shaft on the reciprocation of Said piston, and means for transmitting the niovemeht of said shaft to a registering mechanism.

10. In a'-4 meter, a' plurality of pis'ton cylinders having,t ports and passages therebetween, a hollow piston having u removable closure und al plurality of :mnulargrooves in each cylinder und controllingr the ports therein, a sleeve within one of said pistons und supported by the closure thereof, a cam member nonrotatably mounted within said sleeve intermediate the ends thereof, a shaft, means mounted thereon and coaclinrr with said cam member whereby said shaft is always rotated in the same direction by said cam member on both the forward and roarward movement of the piston within which ii; is mounted. and means co-acting with said shaft-to aetuate a registering.,r mechanism.

11. in a meter, a plurality of |piston chamvbers havi ports and passages therebetween, a hollow piston havi a removable closure in each or' said cylinders, each of said pistons bovini;P an annular 'groove near each end th'ereoil and an annular groove intermediate the ends thereof, said grooves beinbr adapted to register with said cylinder ports, a cam member non-rotatably carried by one of said pistons,

a shaft, means carried thereby and coaeting with said cam member on both the forward and rearward movement of tho rain carvinfr piston to rotate said shafta pinion carried by said shaft, a gear actuated by lsaid pinion, a valve stem actuated by said gear, a valve actuated by said slum, and moans operatively connected with said valve stem for actuatingl :l registering mechanism.

i2. in u meter, a piston casing, a iluid actuated piston therein. u cum member carried by saidpiston, a shaft ocluoicd by said cum member on iis movement in either direction, a geur having a slotted axis driven by said shail,

:i vulve siem lnovably mounted in the slot of said axis, :i smiling' box in which said stem has longitudinal movement. and provided with n conical vulve sont, a valve carried by ,Hihi slum und engaging' said sont, a chamber above said l, :i piston head in .said chamber, a siervo secured io sleeve boing udupllcd to drive :l rogsterln 'Y mechanism.

11i. in o motor, a plurality o1' piston cylinders iii-wing` ports und passages communicuiim.;l therewith, a piston hav! ine; :i plurality ol' A:groove in each oi. iid cylinders. a cilin member nonwolulnhly carried within one of ertldkpistons bul poi-millingA the rotation oi' said piston, a s iinl'ft means cul-rind by id shaft and codering; with said com member on liu` rocipromtiou of said pistou to rotate said shaft, a

50 pinion carried by said shaft, means driven by said pinion for acluntinf; a registering mechanism, and an apertured sodass id henri und :nl iusiably secured to said vulve stern, said plate interposed between said pinion and the cam carrying piston.

14. In a meier, a lcasing having a removable cover, means for sealing said cover, bushings within said casing forming a plurality of piston cylinders, a hollow piston.

having' a removable closure and provided with a plurality of annular grooves in each of said cylinders, there being ports and passages communicating with said cylinders, a sleeve within one of said pistons und carried by the closure therefor, said sleeve having af'ciosed end, a rod passim,Y through said closed end, a support mounted on said rod, means engaging said rod for preventing improper movement of said 'upporh a cam carried by said suppori, a shaft .rotated by said cam on the reciprocntion of the pisfon within which it is mounted, and means actuated by said shaft for driving a registering mcchanisin.

l5. In a meter. a casing, a plurality of piston cylinders having ports and passages communicating,- therewith, a hollow piston having three annular grooves therein and a removable closure, in euch of s id cylinders, said pistons controlling the cylinder ports, :i support nouvrotatabiy' mounted within one ol' said pistons, a guide rod carried by the casing and extending through said supporl, :l cum member carried by snid support, ashutt extending into the comv carrying'piston and ou which said com member is movably mounted, and pins carried by said shaft' und proieciing therefrom on opposite sides thereof, said plus being angulariy inclined to each other and coacting with said cam member to rotate sold shaft on the rompi-ocation or' the cam carrying piston nud said shaft being adapted to impart motion io a registering mechanism.

1U, In :i meter, a lluid actuated piston a cum carried thereby, a sli-aft intermittently rotated by said cam, a pinion carried by said shaft, a geardrlven by said pinion, a valve siem rotated by said gear and having relative longitudinal movement with respect thereto, a valve carrind by said siem, a sleeve to which said stem is secured. and means carried by said sleeve adapted to drive a registering;- mcchunism.

i7. in a meier, a casing, a removable cover, a piston adapted io reciprocate wiihin said casing, a shaft extendingwithin said piston and rotated thereby, a gear hvhvol iournnicd in said cover to which the motion of said `shaft, is imparted. a vulve stein rotated by said gear wheel und having relative longlludinai movement with respect thereto, means for operatively connecting,r 'said stem to a rcfistering mechanism, und means includinbr a flange carried by the cover and a perforated plaie for preventing the passage oi' injuriousmaterial from said casing.

1S. In a meter, the combination of a. casing, hollow reciprocatingsI pistons therein, a cam carried by one of said pistons, said com carrying piston being free to rotate, u. member operatively connected with u, registering mechanism, and m'enns carried by said member und coacting,r with suid'cum to uctunte said member.

19. In a piston meter, the combination oi.' a casing, reciprocating pisions ihoreih, a cam member carried by one ofy said pistons,l and a rotatable member having external contacts thereon between which said cum member reciprocates, said com member at alLtimes engogil if one or the other oi' said coulucis und coacting ihcrewit to actunte said rotatable member. I

20. in a piston meter, thc combination of a casing, iiuid actuated pistons therein, a cam member carried thereby :unl havin.;Y arms provided with cum im' s, a mriuber operatively connec ed with a registering mechanism, and conlnc thereon with which said com i'urescoact to actuuio said member.

21. ln u meter, the combination ot' a casing, fluid actuated pistons therein, :l com carried by one of said pistons und provided with a plurality of operative dum faces, a rotatable member on which said czun is nou-rotatably mounted, u plurality of contacts on said rotatable member wiiih which ,said cam faces couct, and a geur mounted on said shaft and operatively connected witlru registering mechanism. .Y

In a meter, :i c: a cover removably secured thereto, bushings -wiibiu said casing, a flange dependingl from said covcr and engaging said bushings to l'orm separate iluid chambers, there being ports and passages communicatlng with said chambers, a geur mounted intermediate said cover and said ange-a stntiing box within said cover and provided with a conical valve scat. a valve stem actuated by said gear nal movement with respect thereto, a valve having a conical bearing cnrriedby said stem and adapted to engage said seat, meanscarried by said stem for actuating u reg- I istering mechanism, und a Lluld actuated piston operatively connected with said gear.

23. in a meter, :1 casing -provided with a plurality oi piston chambers having tluid ports and passages therebetween, a piston having a plurality of annular grooves in each of said chambers and controlling' ille ports therein, each of said pistons having aremovabie cover, a rod carried by one of said covers, a com member mounted on said rod, means for preventingy the rotation of said cam mem ber. said cam carryingr piston being; t'ree to rotate, a shaft operatively connected with a registeringl mechanism, and contacts on said shativlth which said cam co-acts to in tcrinittently rotate said shaft.

.l-i. in a meier, vthe combination of a casini.; provided with piston chambers having iinid ports and` passages therebetween, a hollow piston provided with a removable end and a. plurality of annular grooves in cach chamber and controlling,l the ports therein, a cam member carried within one of said pistons, a shaft adapted to actuate a registering mechanism extending into tin` cam ca ing piston. and a plurality of contacts on said shaft co-actiirz with said can) member to rotate said shaft, and one of' said pistons beim,r maintained in its cxtreme position during;r the movement ot' the other pistou` 25. In a meter, a casing a tiuid actuated piston therein, a cam member.carried thereby, a shaft actuated by said cam member. a near having a slotted axis driven by said..

shaft, a valve stem movuhly mounted in the slot 0i said axis, a valve carried by said stem, a starting box into 'hich said stem extends and having a conical seat therein with which said valve co-acts, there being a chamber above said seat, n. piston head in said chamber, a sleeve secured to said head, movably mounted in the top of said stutiing box and extending therethrough` there being lubricating material interposed between said piston head and the bottom ot the starting box chamber, said stem extending through said head and into said sleeve, a set screw carried by said sleeve and engaging by said sleeve, V I

26. In a meter, a casing provided with a piston chamber having ports 5i), 78, (it), Til, (i4 and 73. a piston chamber having ports (i6, 72, 61, T5, 82,:ind 67, there being passages o't), 65,68 and 74,between said piston chambers, ti-iid actuated pistons provided with a plurality of annular grooves in each o said chambers and controlling the ports therein, a cam member carried by orient snid'pistous, a shaft adapted to actuate a registering mechanism, means thereand having relative iongitudr' said stem, and a gear carried l seamen on co-acting with said cam member. and means including' said ports and passages for conveying iiuid to and from said piston chambers.

27. 1n a meter, a casing provided with a plurality or' piston chambers having ports and passages therebetween, i hoilow pistons provided with a plurality of annular. grooves controlling the ports therein, one o said pistons having a removable cover, a -asing havingv engagement With said cover, a guide rod extending` into said casing, a 'cum block through which said rod extends, a rod on which sold cam bloei: is loosely mounted, a member' intermediate said cam block and the closed end of said piston casing, a block mounted on said last named rod, a member inter mediate said block and said cam block, nuts 'engaging said last named rod to maintain said cani block in fixed rela-v tion with respect to said casing, a cam member having a plurality of operative cam faces carried by said cam block. a shaft adapted to actunte a registering mechanism extend. ing within said casing. and a plurality ot contacts carried by said shaft with which said cam faces co-aci.

2S. In a meter, piston cylinders baving=fiuid ports and passages communicating therewith, a piston in each o said cyiinlders. a caln carried by one 'ot' said pistons, the cani carrying piston being iree to rotate, and a member actuated by said cam member and adapted to control a registering mechanism.

2). In a meter, piston cylinders having tluid ports and passages communicating therewith, a piston in each o1' said cylinders, each of said pistons havingn plurality of annular grooves therein adapted to register with said ports, a cam member carried by one of said pistons, and mea-ns Cooperating with said cam member io aciuate a registering 1ncchanism,'tbe com carrying pistonbeiner free to rotate.

30j in a meter, piston cylinders having tiuid ports and passages communicating therewith. a piston in each ot' said cylinders, a cam member non-rotatabiy carried' by one of said pistons. and reciprocated thereby, said cam carrying piston being ree to rotate, and means -coacting with said cam to actuate a registering mechanism.

31. in a meter, piston cylinders having fluid vports and vpassages communicating therewith, a piston in each ot' said "WALTE R S. PO LLARD.

Witnesses:

Jona A. Wnmnasnnm,

HERBERT :5. FamnANKs. 

